Fujitsu AUUH18LUAS Service Manual page 52

7. Refrigerant system diagrams
7-1. Model: AOUH18LUAS1
Muffler
Th
D
Th
C
Accumulator
Cooling
Heating
Th
: Thermistor (Compressor temperature)
C
Th
: Thermistor (Discharge temperature)
D
Th
: Thermistor (Heat exchanger middle temperature)
HM
Th
: Thermistor (Outdoor temperature)
O
Th
: Thermistor (Heat exchanger out temperature)
HO
Th
: Thermistor (Pipe temperature)
PI
Th
: Thermistor (Room temperature)
R
7-1. Model: AOUH18LUAS1
Heat exchanger
3-way
valve
Muffler
4-way valve
Heat exchanger
(OUTDOOR)
Th
HM
- (02-30) -
(INDOOR)
Th
PI
Th
R
Th
HO
Th
O
2-way
valve
Strainer
Expansion valve
Strainer
7. Refrigerant system diagrams